Type-metal pot.



E. B. BARBER. TYPE METAL POT. V APPLICATION FILED MAY 31, 1910. RENEWEDNov. 11, 1911. 1 1,01 1,718. Patented-Dec.12,1911.

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E. B. BARBER. TYPE METAL POT.

APPLICATION FILED MAY 31, 1910. RENEWED NOV. 11, 1911. 1,01 1 ,7 1 8.

' Patented Bed. 12, 1911.

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TYPE-HEEAL PO'I.

specification of Letters Patent.

Patented Dec. 12, 19st.

Application filed May .81, 1910, Serial R0. 564,289. Renewed November11, .1911. Serial No. 659.8%.

Y To all-whom ifrmay concern:

r y p t Be it known that I, ERNEST BENJAMIN BARBER, of the city ofBrooklyn, in the county of Kings and State of New York, one of theUnited'States of America, have invented certain new and usefulImprovements in Type-Metal Pots; and I hereby declare that the followingis a full, clear, and exact description of the same.

In my application for machines for easting and composing type, filedMarch 2nd, 1909, Serial Number 480,828, I have shown anddescribed twomelting pots, one a large supply pot from which the molten metal ispumped to the smaller or working pot, both ots being supplied withsuitable burners or heating and means whereby the overflow returns fromthe working pot to the supthe working pot having a vertical well, plstonand outlet to the type body mold, in which, and at proper intervals,

' the piston displaces the whole body of molten metal in the type metalwell and forces a stream of it into the type bodyhereinafter described,I have reduced the mold. a c

- In my concurrent application 564,290 I have shown and describedcertain structural changes in the type casting machine forming thesubject matter of my said application 480,828, and as a result oftheseand other structural changes in the original machine I found itnecessary to redesign the working melting pot to increase the capacityof the type producing mechanism and make a.- working melting potsuitable for a high-speed operating machine, producing either singletype or plural types. In redesigning my Working melting pot I abandonedthe use of the vertical type metal well shown in my former application,owing to the retardation of the piston ejector by the relatively largebody of molten metal therein, and I now use a horizontal type .metalwell with a capacity equal only to body mold, the type metal well' havininlets below the level of the type metal w ich are so disposed withregard to the scum surface that the metal dirt:an d oxids are preventedfrom entering them, thus obviatimg tfhe difficulties heretoforeexperienced thererom.

I have also provided the type metal well and the piston ejector with anactuating mechanism moving thetype metal well in the direction of thetype body mold until the nozzle enters the aperture in the foot plateand then moving the piston ejector to force a stream of type metalthrough the nozzle into the mold cavity, afterward retracting the pistonejector and type metal well to return them to their normal or passiveposition, this operation of the actuating mechanism preventing either apremature discharge of the type metal before the nozzle and type bodymold are locked up or a leakage of the type metal when the cast is made.By these changes and others that I have made in the working melting potmoving parts, in weight, to the least possible, and have obtained acommensurate increase of speed and efficiency in operation, and haveproduced a casting apparatus which is practically self adjusting and ofuniform action, and I have obtained a straight line movement for lockingthe nozzle to the foot plate of the type body mold securing thereby areciprocating movement for the type metal well in parallel relation tothe mold cavity.

For an understanding of the invention reference is to be had to thefollowing dein which:

Figure 1, is aperspective view of a working melting pot made inaccordance with my present invention. Fig. 2, is a plan view of the sameshowing the nozzle lockedin the castingposition. Fig. 3, is a verticalsection on the line aa, with the parts in the same position as in Fig.2. Fig. 4, is a similar view to Fig. 3, with the parts in theirretracted position, and Figs. 5 and 6 are perspective views of the typemetal well and piston ejector respectively.

Like characters of reference, refer to like parts throughout thespecification and draw- %he capacity of the metalreservoir a ofscription and to the accompanying draw-..

, large capacity, suitable flow and overflow ducts being provided forthe circulation of the typemetal between the two melting pots, thesupply melting pot and the flow and overflow ducts not being shown ordescribed as they form no part of the present invention.

The type metal in the metal reservoir 0 is kept in a molten condition,at a substantially uniform temperature, by a burner b from which theheat passes, across the bottom a, and upward through suitable vents c,in the wall a", for the upward circulation of the heat.

A .vpe metal welld is horizontally suspended in the metal reservoir a,below the normal level of the type metal, and is provided with an inletd below the scum surface for the exclusion of the metal dirt and oxide.

The type metal well is provided with a spout e and nozzle f throughwhich a stream of metal is forced by the-operation of the piston ejectorg; The forward movement of the piston ejector occurs when the nozzle hasentered the aperture in the foot plate it, forming one side of the moldcavity, and the retraction occurs before the return of the type metalwell to its normal position as hereinafter described. The ejector isprovided with a lug Z connected by a link 7' to the crank i, actuated bya cam 11 through the agency of the link k crank in and hollow rock shaftThe lug Z extends through an elongated slot m in the type'metal well,which permits the ejector to move forward and back independently of thetype metal well when the working meltin pot and mold are locked up. Thecam z" is mounted on the high speed shaft 2, and this shaft is providedwith a cam 72" actuating the rock shaft g through the agency of thelever a link 27 and crank y. The rock shaft 3 is provided with a crank pmoving the type metal well back and forth during the oscillationof therock shaft. During the operation of the type casting machine the crank pwhen actuated moves the type metal well toward the type body mold r, thestroke of the crank and connected parts being such as to project thenozzle into the aperture in the foot late h. Provision is made wherebythe e ection of the type metal is prevented until the nozzle is lockedin the aperture of the foot plate. This provision in the presentinstance consists in forming the link 9 connecting the type metal wellto the crank 79 with a shoulder s normally engaging the lug j formingpart of the link j, to

emme carry the latter and the piston ejector for ward until the typemetalwell is locked to the type body mold, the movement of the pistonejector then being continued by means of the earn 2'', lever 2, link is,crank 7c hollow rock shaft is, crank 71 and link 7' to force a streamottype metal into the mold cavity. The movement of the link is under theinfluence of the cam 11 compresses the sprin a2. When the levers a andz" are free rom the influence of the cams p and,

i, the spring as pressing against the fixed stop :12" and collar w onthe link is effects the return of all the movable parts to-their normalposition.

Qther means may be provided for efiecting the same ends within the scopeof the appended claims without departing from the principle of theinvention but by means of a working melting pot constructed as abovedescribed, I am enabled to overcome the disadvantages resulting from,the necessity of moving the entire body of type metal, and, the presenceof the metal dlrt and oxide in the type metal well and mold cavity.

Having thus fully described my invention what I claim as new and desireto secure by Letters Patent is:

1. In a working metal pot for a type casting machine, a metal reservoir,a type metal well horizontally suspended therein, a pis ton ejectoroperating horizontally in the type met-a1 well, operable means to bringthe .type metal well into operative relation with the type bodymold, andoperable means causing the actuation of the piston ejector.

2. In a working melting pot for a type casting machine, a metalreservoir, a type metal well horizontally suspended therein and having anozzle to deliver a stream of molten type metal in a substantiallystraight line with the type metal well, a piston e ector operatinghorizontally in the type metal well, operable means to bring the typemetal well into operative relation with the type body mold, and operablemeans causing the actuation of the piston ejector.

3. In a working melting pot for a type casting machine, a metalreservoir, a type metal well horizontally suspended therein, apistonejector operating horizontally in the type metal well to deliver astream of molten type metal in a substantially straight line therefrom,a link connected to the type metal well, operable means actuating t linkto bring the type metal well into operative relation with a type bodymold, a link connected to the piston ejector, op-- erable meansactuating the link and piston ejector, and means causing the retractionof the piston ejector link and type metal well when the cast is made.

4. In a working metal pot for a type cast having an inlet submergedbelow the normal level of the metal in the metal chamber, and anelongated slot extending lengthwise of the type metal well above themetal level,

,a piston ejector operating horizontally in the type metal well andhaving a lug projecting through the elongated slot, a link connected tothe type metal well in front of the slot and having a projectingshoulder, operable means actuating the link to bring the type metal wellinto 0 erative relation with a type body mold, a 1111]! connected to thelug of the piston ejector, a lug for the link engaging the shoulder whenthe working melting pot is moving into operative relation with, andduring its retraction from, the type body mold, operable means actuatingthe linkand piston ejector, and

operable means causing the retraction of the piston ejector and typemetal well when the cast is made.

5. In a working melting pot for a type casting machine, a metalreservoir, a piston well horizontally and reciprocatingly supported inthe metal reservoir and a piston ejector operating in the piston well,the piston well having a nozzle to deliver the metal horizontally to atype body mold.

Brooklyn, N. Y. May 21st,-1910.

ERNEST B. BARBER.

